298 PATAGONIAN EXPEDITIONS : ZOOLOGY 



PLUVIANELLUS SOCIABILIS Jacquemont & Pucher. 



Pluvianellus sociabilis, Jacq. et Pucher. Voy. Pole Sud, Zool. pi. 30, fig. i 

 (Jan. 1845) I v l- HI. p. 125 (1853: Straits of Magellan) ; Sharpe, 

 Cat. B. Brit. Mus. XXIV. p. 303 (1896: Patagonia); id. Hand-list, 

 B. I. p. 155 (1899); Martens, Hamb. Magalh. Sammelr. Vog. p. 

 14 (1900: Patagonia); Crawshay, B. Tierra del Fuego, p. 121 cum 

 tab. (1907) : Useless Bay Settlement, September 16. November 5, 

 1904, breeding. 



Plumanellus socialis, Gray, Gen. B. III. p. 549, pi. 147, fig. 3 (1846). 



Strepsilas sociabilis, Giebel, Thes. Orn. III. p. 541 (1877). 



Charadrius sociabilis, Seebohm, Geogr. Distr. Charadr. p. 107, pi. ii 

 (1888: Tova Harbour, Patagonia in lat. 45 S.). 



FIG. 155. 



Pluvianellus sociabilis. Adult male. P. U. O. C. 7791. Nearly natural size. 



GENERAL DESCRIPTION. 



Size. Adult male. (P. U. O. C. 7791, near Rio Coy, Patagonia, 30 

 September, 1896. J. B. Hatcher.) Total length, about 8.3 inches. 



Wing, 5.6 inches. 



Culmen, 0.7 inch. 



Tail, 2.45 inches. 



Tarsus, 0.75 inch. 



Color. Adult male (cited). General color, above grayish dove color; 

 below white, the grayish dove color appearing as a broad undefined band 

 across the breast. 



Head : Crown and occiput grayish dove color shading into whitish on 

 the forehead and sides of the face. A dusky line in front of the eye ex- 

 tending to the bill. The region of ears shaded darker grayish dove color. 



Neck : Above like crown. Below almost white on the chin and throat, 



